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SAFETY ATTAGHMENT FOB. BLBVATORS. No. 285,762. Patented Sept. 25, 1883.

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`NrrEn STATES PATENT EEICE.

OLIVER S. NOWELL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO ANNIE E.

N OWELL, OF SAME ILAOE.

SAFETY ATTACHMENT FIOR ELEVATORS.

SPEJIFICATION forming part of Letters Patent No. 285,762, datedSeptember 25, 1883.

` Application led August 11, 1883. (No model.)

.To all whom tum/ay concern:

Be it known that I, OLIVER S. NowELL, of

Boston, in the county of Suolk and State of Massachusetts, have inventedcertain new and useful Safety-Attachments for Elevators, of which thefollowing is a speeication.

My invention relates to that class of safety attachments for elevatorsin which the stopping device consists of clamps to sieze upon fixedrods, ropes, or chains, said clamps being caused tol act by springs orotherwise when the sustaining-rope breaks, and is embodied in anauxiliary mechanism, by the aid of which the occupant of theelevator-carriage may cause the stopping-clamp to actin case theautomatic device fails to perform its functions, the object being toguard against the falling of an elevator when its sustaining-ropes havenot broken, but have become loosened from the restraining machinery.This objecty I attain by the mechanism illustrated in the accompanyingdrawings, in which- Figure l is a perspective view, showing myinvention; and Fig. 2 is an elevation showing the same in detail.

In the drawings I have shown my invention in connection with two fixedsafety devices,- but in practice I prefer to have it applied to foursafety devices. I have also shown it as connected with the floor of theelevator-carriage, although'it may be attached to the top of thecarriage, in which case the hand-lever would project downward from theceiling instead of upward from the fioor.

In the drawings, Fig. 1,` let A A represent the side guides f'or theelevator-carriage, and B B B2 the frame of the elevator-carriage,l B3being the platform or floor of the same.

C is a cross-bar, to which the hoisting-ropes c c are attached. Thiscross-bar O is connected to the frame B by means of a yoke, D, acoupling-piece, D', housings D3, and springs D2, so that thelifting-power of the ropes c c is transmitted to the elevator-carriage.

Attached to the ends of thecro'ss-bar O are two vertical rods, C G2,which pass down through the floor of the elevator-carriage, as shown,and there one, O', connects with the link E, the lower end of whichembraces the lever E', and holds it in position against the action ofthe springs S S.

H is a rocker-shaft, to which the lever E is attached, so that when thelever E is thrown downward, as indicated by dotted lines in Fig. 2, itcauses the shaft H to revolve and to throw upward the clamping-jaw H',Fig. 2, and thus force it against the fixed ropes K. These wire ropesK'and K (see Fig. l) are rigidly attached to theframe of theelevatorwell room, and may be located as represented 6o in the drawings,or in any convenient position, it only being essential that they shouldbe so placed that the clamping-jaws H shall engage with Vthem when .thelink E releases the lever E.

In case the above-described clamping device does not act when theelevator is falling,r (as might happen, if from any cause the rods O C2did not drop, but maintained their relative position withtheelevator-carriage,) then 7o my device for throwing out the link E,which I will now explain, will become useful. kThis link E, when ithangs vertically, as indicated in full lines in Fig. 2, holds the leverE in position, so that it, through the rocker-shaft H, keeps theclamping-jaw H away from the fixed rope K; but if the said link E isswung outward, as indicatednby dotted lines in Fig. 2, then the lever Ecan fall and allow the clamping-jaw H to engage with the fixed rope 8oTo enablethe occupant to operate the link E as above described, Iconnect the said link E bya link, L, to ahand-lever, L, which is pivotedat a, and is provided with a notched guide, LZ, at its upper end, sothat when the occupant of the ear wishes to free the lever E all he hasto do is to throw the hand-lever L out of its notch and move it backwardor forward sufficiently to swing the link E, Fig. 2, over to a positionsimilar fo one indicated 9o by dotted lines in Fig. 2, in which positionit allows the lever E to fall, as indicated by dotted lines, and tothrow the clamping-jaw H/ against the fixed rope K, and thus stop thefall yof the elevator-carriage.

Having thus described my invention,` what I desire to secure by LettersPatent is` In an elevator, the combination of the handlever L', links Land E, with the lever-E', rocker-shaft H, clamping-jaw HQ and fixed 10orope K, all operating together, substantially as described, and for thepurpose set forth.

. OLIVER S. NOWELL.

Witnesses:

WILLIAM EnsoN, HELEN M. Enno-AN.

